There were several notable aircraft that utilized the Gull Wing
i.e. The F4U Corsair and the Junkers Ju-87 Stuka . See links .
View page
if the door is hinged in the middle aussumably on a car it is
call a wing or gull door they came factory on a couple cars but
were not popular do to there heavy weight cuasing them to
unexpectably close if not properly snapped in to place
View page
Lamborghini Countach
- with gull-wing doors
View page
The doors are called gull-wing doors or butterfly doors